Sunday, March 7, 2010

Optional Spell Failure Chance for 3e

Spell failure chance is terrible. Almost no arcane casters go for it. Also, any mechanic that requires an extra roll in 3e -in this case, a percentile spell failure chance- is a bad one. Instead convert the percentile chance to a flat penalty to spell DC at a rate of -1 for each 5%. You may need to ad hoc a rule that arcane casters can't wear heavier than light armor, but I kind of doubt it, as spell DC is pretty solidly balanced by CR.